I've noticed my dash AC isn't blowing too cold so far this year. As its getting warmer outside, I want to remedy this. I've seen a lot of YouTube videos and seen the AC charging cans in Autozone. My q...
The green oil you refer to is probably green dye that has prevously been put in to find a leak. Some cans of 134A already have the dye in it just for that purpose which means you probably have located the service port you to charge from.